Sometime ago, I was talking with my japanese friend and he used this word 差しつ差されつ. I didn't understand him and wanted him to explain but he said that I should try to find out on my own. So I checked some dictionaries and everywhere it was explained as "drinking (sake) together". But when I told him that if he wanted drinking with me it's fine with me, he said that he didn't mean drinking and and didn't want to explain the meaning of this word.I looked for the other meanings of 差しつ差されつ but beside the "drinking together" I haven't found anything else.Is there any other meaning to this expression or he was just making fun of me?